# A226638 (b-file synthesized from sequence entry)
0 0
1 1
2 6
3 20
4 84
5 319
6 1260
7 4901
8 19176
9 74860
10 292494
11 1142459
12 4462920
13 17433181
14 68099226
15 266014100
16 1039126224
17 4059116419
18 15856045380
19 61938144041
20 241947712356
21 945115407340
22 3691885043874
23 14421535219799
24 56334548849040
25 220058498917081